To obtain oxygen into the blood, its blood supply (cardiovascular system) pumps blood from of the heart to the lungs. Oxygen-depleted blood is returned to the heart through veins to restart circulation.
The respiratory system is supported by the circulatory system, that carries blood from and into the lungs. The circulatory system consists of the heart and blood arteries. The circulatory system assists in moving nutrients and oxygen through the lungs to the body's tissues and organs. Additionally, it aids in the removal of trash and carbon dioxide. The portion of the airway that extends below the larynx is known as the trachea (windpipe) (LAIR-inks). To keep the trachea (TRAY-kee-uh) open, its walls are lined with hard cartilage rings. Cilia that border the trachea move fluids and other objects out of the airway to prevent them from entering the lungs.
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What enable bacteria to survive in a wide variety of habitats?
Bacteria are single-celled organisms having membrane-attached cell organelles instead of a true nucleus. The reason why bacteria may survive in harsh settings is because:
energy-generating enzymes
Endospores
tissue wall
Cyst
Bacteria have the following characteristics:
The primary property of the bacteria is their ability to develop a cyst, which protects them from harmful environmental elements.
For instance, the prokaryotic organism can survive in both hypertonic and hypotonic conditions because to its cell wall.
The bacteria also make endospores, which let them tolerate extremely high temperatures.
The bacteria create cold shock proteins that help them withstand freezing temperatures.
In order for bacteria to survive in harsh settings, protein synthesis, cyst development, and endospores are crucial.
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Describe the desalination process and how it can be used to provide drinking water for the Middle East. Use examples to support your ideas.
Answer:
By the removal of salts.
Explanation:
The desalination process is used to remove salts from the ocean or sea water. This method can be used to provide drinking water for the people of Middle East. This method is used in the middle east because there is scarcity of water due to desert area and these countries are located near the sea so they can use the sea water for drinking purpose with the helps of desalination process. Saudi Arabia, the United Arab Emirates, Kuwait, and Bahrain are the countries which are used this method.
Some lizards have different size legs. Lizards with longer legs have the
ability to better access food. Overtime Lizards with short legs became
less common. What is the adaptation?
Explanation:
adaptation sounds like having longer legs
lizards that had longer legs had more access to food
so
they had more chances to mate
making kids with longer legs
3. The vast majority of animals are
Answer:
Linnaean steps.
Explanation:
About 1.2 million species have been formally described, the vast majority from the land rather than the oceans
give reason an Empty bottle floats on the surface of a water while a bottle filled with water flows inside the liquid
Answer:
The empty plastic bottle floated on water. The bottle filled with water sank because the weight of empty plastic bottle is less than the weight of water displaced it but when the bottle is filled with water its weight becomes more than the weight of water displaced by it.
( please mark to brainliest)
Which of the following claims about the origin of the euglenid chloroplast is best supported by the three-membrane structure of the envelope?
A
It originated from the spontaneous assembly of organic molecules into a lipid bilayer inside a free-living prokaryote.
B
It originated from the fusion of the plasma membranes of two different free-living photosynthetic prokaryotes.
C
It originated from the incorporation of a photosynthetic prokaryote into a eukaryotic cell by a single endosymbiotic event.
D
It originated from the incorporation of a photosynthetic prokaryote into a eukaryotic cell by two endosymbiotic events.
The claims about the origin of the euglenid chloroplast are best supported by the three-membrane structure of the envelope: it originated from the spontaneous assembly of organic molecules into a lipid bilayer inside a free-living prokaryote.
Thus, the correct answer is A.
Euglenids (Excаvаtа, Discobа, Euglenozoа, Euglenidа) is а group of free-living, single-celled flаgellаtes living in the аquаtic environments. The uniting аnd unique morphologicаl feаture of euglenids is the presence of а cell covering cаlled the pellicle.
The chloroplаsts of Euglenа hаve аrisen from the progressive reduction of endosymbiotic green аlgаe. The theory is supported by the presence of а third membrаne аround the chloroplаsts of Euglenа which is not endoplаsmic reticulum (ER) in origin аnd mаy be derived from the plаsmаlemmа of the originаl symbiont. In аddition, Euglenа is the only orgаnism in which chloroplаst loss cаn be induced experimentаlly. Dinoflаgellаte chloroplаsts аre аlso surrounded by three membrаnes, аnd it is proposed thаt they too evolved from symbiotic eucаryotic аlgаe.
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Permeable rock that contains and transmits groundwater is called a(an)
A lake
B aquifer
glacier
D
ice cap
Answer:
Permeable rock that contains and transmits groundwater is called an Aquifer.
How does smoking weaken damage the respiratory system?
The smoking or act of inhaling smoke can damage the respiratory system by reducing the surface area for the exchange of the gases and can lead to cancer as well.
Smoking can cause lung disease by damaging your airways and the small air sacs (alveoli) found in your lungs. It can also cause irritation of the trachea (windpipe) and larynx (voice box). Inhaled tobacco smoke moves from the mouth through the upper airway, ultimately reaching the alveoli.
As the smoke moves more deeply into the respiratory tract, it can cause inflammation and damage to the cilia, tiny hairs that play an essential role in the function of the respiratory system. Smoking can also increase the production of phlegm and mucus, leading to an increased risk of respiratory infections. It can also damage the cilia that help to clear unwanted particles from our lungs over time. Cigarette smoke can also contain high levels of carcinogens, which can lead to lung cancer.
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What is the relationship between mass and solar energy in plants?
Answer:
Plants increase in mass as they convert solar energy to chemical energy
Vascular plants evolved what structures to become more competitive?
Answer:
comlex system of reproduction through spores, seeds, and fruits
Will give brainliest and 5 stars. Do you think there is a connection between carbon levels, global temperatures, ice melting, and sea-level rise? If so, what is the connection?
Answer:
yes because all is caused from the over use and exploitation of harmful gasses like CO2.
Explanation:
Answer:
Yes, I think there is a connection between carbon levels, global temperatures, ice melting, and sea-level rise. I said yes because, all of these are caused from the over use and exploitation of harmful gasses like CO2
Explanation:
What are the 4 main points of natural selection?
The four major principles of natural selection are that populations of living things change over time due to a straightforward mechanism called natural selection.
In fact, it is so straightforward that it can be divided into five simple processes, referred to here as VISTA (variation, inheritance, selection, time, and adaptation). Most attributes are inherited, more offspring are generated than can survive, and offspring with more attractive traits will survive and have more offspring than those with less favorable traits.
These three principles result in natural selection, which is an unavoidable process. More environment-adapted organisms are more likely to survive and pass on the genes that contributed to their success. Over time, species change and diverge as a result of this process.
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What are the 3 main functions of meiosis?
Answer:
to produce gamate or reproductive cells.
to distinguish between male and female specie.
to produce tetrads having equal number of chromosomes
22: What are the reactants (substances needed) for photosynthesis.
Plants require three elements in order to perform photosynthesis: carbon dioxide, water, and sunlight.
What are the two end products and three reactants of photosynthesis?According to the chemical equation for photosynthesis, the reactants (carbon dioxide, water, and sunlight) result in the production of glucose and oxygen gas as two products. The complete mechanism of photosynthesis is represented by a single chemical equation.
Is photosynthesis a reaction of what kind?A reaction that is endothermic is photosynthesis. This indicates that without energy, it cannot happen (from the Sun). Chlorophyll, a green pigment found in leaves, absorbs the needed light.
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Some comets do not have a:
A: tail
B: coma
C: nucleus
PLEASE ANSWER ILL GIVE BRAINLIEST IF THE ANSWER YOU GIVE IS CORRECT!!!
Answer:
The answer is A, tails.
Explanation:
Some don't have tails and look like balls of light instead.
Answer:
tail if this is wrong (sorry)
Will mark brainliest and use your own word
Which of the following statement is most accurate? Explain your choices
A. Chimpanzees and human have a common ancestor
B. Chimpanzees evolved from human
Answer;
im confuzzled but it might obviously be B. if im correct.
Explanation:
Answer:
A. Chimpanzees and humans have a common ancestor
Explanation:
technically humans evolved from chimpanzees so the first chimpanzee is technically the first human
A parent cell has 28 chromosomes and completes meiosis. How many chromosomes result in each cell produced
If a parent cell has 28 chromosomes then the number of chromosomes in the daughter cell produced after the cell undergoes meiosis is 14 chromosomes.
Meiosis is a cell division process for gamete production. It helps in the sexual reproduction of eukaryotes. Gametes produced from two parents will unite to form the zygote, which thus contains a combination of unique sets of chromosomes inherited from two parents.
Hence each daughter cell will have half the no of chromosomes as that of their parents. So the number of chromosomes in each of the daughter cells is 28/2 = 14 chromosomes. In meiosis 1 the number of chromosomes becomes half while in meiosis 2 , it is similar to mitosis, so the number of chromosomes remains the same.
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3.
What methods are you using to test this hypothesis?
Outline the steps of the procedure in full sentences. Natural selection
There are two methods for finding the hypothesis Null hypothesis and the p-Value method.
What is hypothesis?A hypothesis (plural: hypotheses), in a scientific context, is a testable statement about the relationship between two or more variables or a proposed explanation for some observed phenomenon. In a scientific experiment or study, the hypothesis is a brief summation of the researcher's prediction of the study's findings, which may be supported or not by the outcome. Hypothesis testing is the core of the scientific method.The researcher's prediction is usually referred to as the alternative hypothesis, and any other outcome as the null hypothesis -- basically, the opposite outcome to what is predicted. (However, the terms are reversed if the researchers are predicting no difference or change, hypothesizing, for example, that the incidence of one variable will not increase or decrease in tandem with the other.) The null hypothesis satisfies the requirement for falsifiability: the capacity for a proposition to be proven false, which some schools of thought consider essential to the scientific method.To learn more about null hypothesis refer to:
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In 1973, Stanley Cohen and Herbert Boyer inserted a gene from an African clawed frog into a bacterium. The bacterium then began producing a protein directed by the gene from the frog.
Which is considered a transgenic organism?
Since the bacterium expresses the foreign gene from the African clawed frog, therefore, the bacterium is considered as the transgenic organism.
Gene is the most basic unit of heredity. It is the segment of DNA that encodes for a particular protein. There are various genes present in a single DNA strand. The genes are further composed of alternative forms called the alleles.
Transgenic refers to the phenomenon where DNA segment from an unrelated organism is artificially introduced and expressed in the host's genetic machinery. Such an organism is called the transgenic organism. And the artificially introduced gene is called transgene.
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What is this bug? Need answers ASAP for Biology project
Answer:
Alder Fly
Explanation:
That looks very similar to an Alder Fly because of the designs on the wings and the way it's formed.
The cremaster muscle helps maintain testicular temperature. What does the action of this muscle suggest about how it is controlled
The cremaster muscle is controlled by the sympathetic nervous system.
The sympathetic nervous system is responsible for the "fight or flight" response, and it is activated during times of stress or physical activity. The action of the cremaster muscle, which helps maintain testicular temperature, suggests that it is controlled by the sympathetic nervous system to respond to changes in the body's internal and external environment. Specifically, when the body is under stress, the sympathetic nervous system will cause the cremaster muscle to contract, drawing the testicles closer to the body and increasing their temperature. This is thought to help protect the sperm from damage due to changes in temperature. Conversely, when the body is at rest or in a relaxed state, the cremaster muscle relaxes, allowing the testicles to hang away from the body and decrease in temperature, which is optimal for sperm production.
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How do cells read DNA, and how does DNA code for traits?
Which of the following can occur at breaks in the earth's crust?
A
mountain ranges
B.
earthquakes
C.
All of the above
D.
volcanoes
Answer:
C
Explanation:
Breaks are called faults, and the 2 tectonic plates at the fault move and they can squeeze together to form a mountain. They can also form earth quakes like that. Volcanoes can be formed by 2 tectonic plates that move apart
Help! I don't understand how to set up the Punnett square on these questions!
Answer:
i know how to do them kinda, i just finished learning them, i cant give u a 100% on it but can u take another picutre but zoomed in so i can see the problems better
Explanation:
Which of the following is NOT an example of homeostasis?
As humans age, they become more susceptible to disease and cancer.
During rigorous exercise the heart rate increases to deliver more blood to the cells.
When blood glucose is high, the hormone insulin reduces blood glucose.
When body temperature rises, nerve impulses cause sweat glands to release more sweat.
As humans age, they become more susceptible to disease and cancer.
The statement "As humans age, they become more susceptible to disease and cancer" is not an example of homeostasis. Homeostasis refers to the ability of an organism or system to maintain a stable internal environment despite external changes. It involves the regulation and balance of various physiological processes.
The other options provided in the question are examples of homeostasis:
During rigorous exercise, the heart rate increases to deliver more blood to the cells. This is a mechanism by which the body maintains an adequate supply of oxygen and nutrients to the working muscles during increased physical activity.When blood glucose is high, the hormone insulin reduces blood glucose. This is an example of the body's regulation of blood sugar levels to maintain them within a specific range.When body temperature rises, nerve impulses cause sweat glands to release more sweat. This is a response that helps regulate body temperature by cooling the body through evaporation of sweat.In contrast, the statement about aging and increased susceptibility to disease and cancer does not describe a mechanism of maintaining internal stability or balance. Aging is a natural process that is associated with various changes in the body, including a decline in certain physiological functions and an increased risk of developing diseases. It does not directly relate to the concept of homeostasis.
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[HELP PLS]
Cloning is the replication of all or part of an organism. Although cloning is still a developing technology, many future uses have been proposed. Which phrase describes a potential medical application of cloning?
A) increasing genetic diversity in a population.
e
B) Enhancing the traits of organism already possesses.
C) Growing new organs for transplant patients.
D) Decreasing life expectancy,
the answer is C because all other answers do not suit the description of cloning
Answer:
b sounds a reasonable answers
a pizza restaurant has hamburger pepperoni Canadian bacon and sausage how many ways can a three topping
From four individual toppings that are available, you can create four combinations of a 3-toppings pizza.
If a pizza restaurant has four toppings available namely hamburger, pepperoni, Canadian bacon, and sausage, therefore that particular pizza restaurant is able to make four different combinations of 3-topping pizzas out of those four toppings using the concept of permutations in probability. The first combination would be of a pizza with toppings of hamburger, pepperoni, Canadian bacon. The second combination would be of a pizza with toppings of hamburger, pepperoni, and sausage. The third combination would be of a pizza with toppings of hamburger, Canadian bacon, and sausage. The fourth combination would be of a pizza with toppings of pepperoni, Canadian bacon, and sausage.
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Your question seems incomplete, but I assume the full question was:
"A pizza restaurant has hamburger, pepperoni, Canadian bacon, and sausage. How many ways can a three topping pizza be created?"
Can any body please help me out? Thank you :)
Answer:
9. 50%
10. There is a 2 in 4 probability their offspring will be Heterozygous for ear lobes
Explanation:
So if pendulous ear lobes are (E) and adherrent ear lobes are (e)
Its important to regonize that a man who has pendulous ear lobes whose mother had adherrent ear lobes should be written as (Ee) seeing as how the pendulous ear lobes are dominant over adherrent ear lobes
also, recognize that while using a punnet square you have a set of two alleles
Note: The husband is Heterozygous
The Husbands: (Ee) pendulous ear lobes
The Wifes: (ee) adherrent ear lobes
Heterozygous just means they can either pass on the pendulous ear lobes or adherrent ear lobes so their alleles look like (Ee)
you can begin the problem by using a punnet square:
e e
E Ee Ee
e ee ee
What is the most important significance of meiosis?
Gametes, or sex cells, which are needed for sexual reproduction are created during meiosis. It deactivates the sporophytic information while activating the genetic information for the production of sex cells.
Meiosis is, meaning "lessening," as it is a division through reduction) In sexually reproducing animals, is a specific form of cell division of germ cells that results in the gametes, such as sperm or egg cells.
It comprises two rounds of division, producing four cells with just one copy of each chromosome as a final product (haploid). Furthermore, genetic material from the paternal and maternal copies of each chromosome is crossed over prior to division, resulting in novel combinations of coding on each chromosome.
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There are two types of blood vessels that connect to capillaries: venules and arterioles. Based on their names, what can you guess their role is in carrying blood
The vasculature is a network of blood arteries that connects the heart to all of the body's organs and tissues. Arteries and arterioles transport oxygen-rich blood and nutrients from the heart to the organs and tissues, while veins and venules return deoxygenated blood to the heart.
Blood vessels are circulatory system components that convey blood throughout the human body. These veins carry blood cells, nutrients, and oxygen to the body's tissues. They also remove trash and carbon dioxide from tissues. All of the body's tissues rely on the functioning of blood arteries to support life.
There are five types of blood vessels: arteries, which take blood out from the heart; arterioles; capillaries, which exchange water and chemicals between the blood and the tissues; venules; and veins, which bring blood back towards the heart from the capillaries.
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Full Question: There are two types of blood vessels that connect to capillaries: venules and arterioles. Based on their names, what can you guess their role is in carrying blood? Do they carry oxygenated or deoxygenated blood?